摘要:
A rotary anvil is outfitted with pins protruding from the base of an axially extending channel along the surface of the anvil. A cutting mat having a generally elongate body includes first and second locking members projecting from opposite axial ends thereof. The cutting mat is installed on the anvil such that the first and second locking members are positioned within the channel over one of the pins. The cutting mat may include a foot extending from the first locking member that includes a pin receptacle that seats down over the pin. Alternatively, a lockup device may be provided to temporarily secure the cutting mat to the rotary anvil. The lockup device includes a pin receptacle on the bottom surface thereof adapted to seat down over the pin. The first and second locking members of the cutting mat are then installed into the channel in cooperation with the lockup device.
摘要:
The invention relates to a method for cutting webs of material (12), which rest upon the peripheral surface of the cutting and feed roller (1) and to a cutting and feed roller (1). These webs of material are cut through by means of a cutting device that, when in its position of rest, is essentially located inside the lateral surface (2) of the cutting and feed roller (1). This cutting device comprises at least one blade (4) that, when cutting the web of material (12), passes through an opening (3) located inside the lateral surface (2) of the cutting and feed roller (1). The opening located inside the lateral surface (2) of the cutting and feed roller (1), through which the at least one blade (4) passes during the cutting process, is closed when a cutting process is not occurring.
摘要:
A high-speed shear for transversely cutting rolled strip with knife carriers which can be driven for rotation and are arranged in pairs opposite each other. The knife carriers are supported on shafts of gear wheels arranged at a fixed axial spacing in pairs opposite each other in a shear cassette. The shear cassette is mounted within an outer frame and the shear cassette is provided with a lifting device for raising or lowering the shear cassette within the outer frame. In a method for operating the shear, the two knife carriers are moved into a horizontal position for allowing the strip end to enter or travel through, and the shear cassette is moved within the outer frame into a raised transfer position.
摘要:
A method of cross-cutting a moving web uses a cutting knife operably mounted on a knife cylinder having a circumferential distance LZ where LZ is smaller than a cut length, LA. The knife cylinder for revolving in a first and a second opposite direction is powered by a drive motor in either direction. The method includes revolving the knife cylinder in a first direction, cutting the web with the cutting knife, and completing a first cut. The knife cylinder is then reversed to retard progress in the first direction and then accelerated to the speed of the moving web until starting the second cut.
摘要:
The present invention provides a web perforating apparatus which includes a system for detecting and indicating when a blade in the apparatus is broken, dull or otherwise not perforating the web. The apparatus is typically used with rewinders or other similar machines that produce perforated sheets of products, such as paper, using sets of stationary anvil blades and rotating perforating blades. The apparatus comprises at least one anvil including a blade holder and an anvil blade which is positioned within the blade holder. The blade holder is formed of an insulating material for electrically isolating the anvil blade from the machine frame of the rewinder. An electrical conductor is coupled to the anvil blade for supplying an electric current to the anvil blade from a current source. The apparatus also includes at least one grounded perforating blade for moving relative to the anvil blade and cooperating with the anvil blade to perforate the web at predetermined points along its length. The perforating blade will contact the anvil blade after perforating the web. A closed circuit is formed and maintained along the anvil blade at points where the blades are in contact with each other. The apparatus further includes means for detecting if a closed circuit has been formed and maintained along the anvil blade when the perforating blade moves into a position where the blades should contact each other.
摘要:
Cutting tools (1) may include a lighting device (5). The lighting device may be mounted on a tool unit (3) adjacent to a grip portion (26). Preferably, the grip portion serves to protect the lighting device from being damaged by an external force. The tool unit may include a motor case (21) for accommodating a motor. The grip portion may extend from the motor case and the lighting device may be mounted on or within the motor case. The tool unit may further include a blade case (20) that at least partly covers a cutting blade (22). The blade case may be joined to the motor case via a joining portion J defined on the motor case. In this case, the lighting device is preferably disposed proximal to the joining portion. The lighting device may include at least a first light (5a) and a second light (5b) that are arranged and constructed to illuminate different areas.
摘要:
There is disclosed a cut line forming method including: using a cutter roll (1) having cutting blades (2) protruded on its outer circumference and an anvil roll (10) for receiving the cutting blades; feeding a sheet (20) into the clearance between the cutter roll and the anvil roll; and turning the rolls individually to form cut lines (21) in the sheet. The cutting blades (2) of the cutter roll (10) are formed into a shape of letter nullVnull. The anvil roll has receiving faces (11) of a predetermined width (w) formed at an interval in a roll axis direction. The cutter roll (1) is turned to direct the crests of the V-shape of the cutting blades forward of the turning direction thereby to advance cuts from the side of the crests of the V-shape so that cut lines corresponding to the width size of the receiving faces may be intermittently formed in the sheet along the V-shape.
摘要:
A die apparatus for supporting and retaining rotary dies in operation having a base, a cover supported by a plurality of columns, a cross member moveable along the columns and modular die supports rollingly engaged with the rotary dies. A method of installing and removing the rotary dies from the apparatus includes moving the dies along a first axis of movement within the apparatus through use of a support strap and moving the dies to and from the apparatus through use of a conveyor.
摘要:
A method and apparatus for continuously producing pasted positive and negative electrode plates from pasted lead or lead alloy expanded, punched or cast metal mesh strip for use in lead-acid batteries without the use of paper barriers. The heating of cutting devices such as roll-mounted die-cutters to a predetermined temperature range of at least about 150null C., preferably about 160 to 300null C., and more preferably about 180 to 210null C., eliminates sticking of the paste on the pasted metal mesh strip to the cutting devices and obviates the need for the paper barriers.
摘要:
A rotating shearing device for cropping fast-running rolling stock, in particular wire, includes two axially cutting annular knives which rotate about their axes at the same rotational speed. The two axially cutting annular knives include end cutting edges directed toward one another which converge to the clearance required for separating running stock during the cutting operation and lie in planes which are arranged at an acute angle to one another and intersect one another in a line. The rolling stock is guided toward the shearing device by a front guide and guided away from the shearing device by a rear guide. The front guide is pivotable to change in the relative position between the rolling stock and the cutting body so that the rolling stock may be guided either through the space between the annular knives which is free for the cut-free passage of the rolling stock or into the wedge-shaped cutting region of the annular knives. The rear guide part arranged behind the shearing device is also pivotable between a lower end and upper end position.